Amazon.com price target raised to $630 from $475 at BairdBaird analyst Colin Sebastian raised his price target for Amazon.com to $630 saying the company's Q2 was a "pristine quarter almost across the board." Accelerating growth and higher than expected margins will "prove irresistible to investors," Sebastian tells investors in a post-earnings research note. He reiterates an Outperform rating on the stock. Shares of Amazon were upgraded this morning at B. Riley and Barclays.

Amazon.com price target raised to $650 from $520 at Piper JaffrayPiper Jaffray analyst Gene Munster raised his price target for Amazon.com shares to $650 saying the company just reported a third straight quarter of margins materially above expectations. Munster expects further margin expansion after management reiterated its intent to focus on productivity in 2015. He sees unit growth as being a catalyst for shares and reiterates an Overweight rating on the stock. Amazon shares, which upgraded this morning at B. Riley and Barclays, are trading up $87.82 to $570.00 in pre-market trading.

Amazon.com upgraded to Overweight with $700 target at BarclaysBarclays analyst Paul Vogel upgraded Amazon.com to Overweight from Equal Weight saying the online retailer's margins are expanding much faster than previously thought. Following Amazon's Q2 results, Vogel views the company's outside the U.S. and Web Services revenue growth as both a surprise and sustainable. The quarter "was too good in our view to wait" for an upgrade, the analyst tells investors. He raised his price target for Amazon shares to $700 from $412. In pre-market trading, the stock is up $88.77 to $570.95.